Genome Sequences of 12 Phages That Infect Klebsiella pneumoniae

Trever L Thurgood1, Ruchira Sharma1, Jackson J Call1

  • 1Department of Microbiology and Molecular Biology, Brigham Young University, Provo, Utah, USA.

Insights

Researchers sequenced the genomes of 12 Klebsiella pneumoniae bacteriophages found in US wastewater. These findings contribute to understanding antibiotic resistance and phage diversity in environmental samples.

Area of Science:

  • Microbiology
  • Genomics
  • Environmental Science

Background:

  • Klebsiella pneumoniae is a major cause of hospital-acquired infections.
  • This pathogen frequently develops antibiotic resistance.
  • Bacteriophages are viruses that infect bacteria and can be sources of novel antimicrobial agents.

Purpose of the Study:

  • To sequence and characterize 12 Klebsiella pneumoniae bacteriophages.
  • To explore the genomic diversity of phages in environmental reservoirs.
  • To provide resources for potential phage therapy development against K. pneumoniae.

Main Methods:

  • Isolation of bacteriophages from wastewater samples.
  • Whole-genome sequencing of isolated phages.
  • Bioinformatic analysis of phage genomes.

Main Results:

  • Complete genome sequences for 12 K. pneumoniae bacteriophages were obtained.
  • Phages were isolated from wastewater treatment facilities in the western United States.
  • Genomic data provides insights into phage-host interactions and resistance mechanisms.

Conclusions:

  • The study presents novel genomic data for K. pneumoniae bacteriophages.
  • Wastewater environments harbor diverse phage communities.
  • This research supports the ongoing exploration of bacteriophages as therapeutic alternatives.

Related Concept Videos

DNA Bacteriophages01:26

DNA Bacteriophages

Bacteriophages, or phages, are viruses that specifically infect bacteria, utilizing their genetic material to hijack host cellular machinery for replication. DNA bacteriophages employ single-stranded DNA (ssDNA) or double-stranded DNA (dsDNA) genomes. These phages exhibit diverse replication strategies and host interactions, influencing their ecological roles and applications in biotechnology and medicine.ssDNA BacteriophagesssDNA phages, with their small genomes, utilize unique strategies to...
615
Viral Replication: Lytic Cycle01:20

Viral Replication: Lytic Cycle

Bacteriophages, or phages, are viruses that specifically infect bacteria. Among them, T-even bacteriophages, such as T4, exhibit a well-characterized lytic replication cycle in Escherichia coli (E. coli). This process ensures the rapid proliferation of the virus while ultimately leading to the destruction of the bacterial host.Attachment and DNA InjectionThe infection process begins with the recognition and binding of the T4 phage to the E. coli cell surface. Tail fibers of the phage...
1.0K
Lytic Cycle of Bacteriophages01:30

Lytic Cycle of Bacteriophages

Bacteriophages, also known as phages, are specialized viruses that infect bacteria. A key characteristic of phages is their distinctive “head-tail” morphology. A phage begins the infection process (i.e., lytic cycle) by attaching to the outside of a bacterial cell. Attachment is accomplished via proteins in the phage tail that bind to specific receptor proteins on the outer surface of the bacterium. The tail injects the phage’s DNA genome into the bacterial cytoplasm. In the...
77.1K
Lysogenic Cycle of Bacteriophages00:43

Lysogenic Cycle of Bacteriophages

In contrast to the lytic cycle, phages infecting bacteria via the lysogenic cycle do not immediately kill their host cell. Instead, they combine their genome with the host genome, allowing the bacteria to replicate the phage DNA along with the bacterial genome. The incorporated copy of the phage genome is called the prophage. Some prophages can re-activate and enter the lytic cycle. This often occurs in response to a perturbation, such as DNA damage, but can also transpire in the absence of...
67.1K
Bacterial Phylum Chlamydiae01:29

Bacterial Phylum Chlamydiae

The phylum Chlamydiae or Chlamydiota is composed of a single order, Chlamydiales. This phylum consists entirely of obligate intracellular parasites that infect eukaryotic hosts. While human pathogens within this group have been studied extensively, the phylum encompasses many species capable of interacting with various eukaryotic organisms. Members of Chlamydiae are typically small cocci, approximately 0.5 μm in diameter, and exhibit a distinctive developmental cycle. As is characteristic...
344
Viral Replication: Lysogenic Cycle01:16

Viral Replication: Lysogenic Cycle

The lysogenic cycle is a crucial viral replication strategy that allows bacteriophages to persist within host cells without immediately destroying them. This process is primarily observed in temperate phages, such as bacteriophage lambda (λ), which infects Escherichia coli. The cycle allows the viral genome to persist across bacterial generations while keeping host cells viable.Integration of the Viral GenomeUpon infection, bacteriophage lambda attaches to the bacterial surface and injects...
1.1K